Device for dipping cut-glass articles.



F. a. FARNHAM, DEVICE FOR DIPPING GUT GLASS ARTICLES. APPLICATION FILED FEB. 20, 1909.

967, 1 1 9. Patented Aug. 9, 1910;

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P. G. FARNHAM. DEVICE FOR DIPPING GUT GLASS ARTICLES.

APPLICATION FILED FEB. 20, 1909.

Patented Aug. 9,1910.

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F. G. PARNHAM. DEVICE FOR DIPPING GUT GLASS ARTICLES.

APPLICATION FILED FEB. 20, 1909.

Patented Aug. 9, 1910.

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ill ll Elli K GUNN FARNHALWT, h HONESDALE, PENNSYLVANIA.

DEVICE FOR- DTPPING CUT-GLASS ARTICLES.

canto.

specification of Letters Patent.

duplication filed February 20, 1909. Serial No. lt'ifallfl.

To all whom it may concern."

Be it known that T, FRANK GUNN FARN HAM, citizen of the United States, residing at Honesdale, Pennsylvania, have invented certain new anduseful Improvements in Devices for Dipping Cut-Glass Articles, of which the following is a specification.

My invention relates to devices for dipping cut glass articles in an acid bath, and is designed as an improvement upon the apparatus which forms the subject of Letters Patent of the United States granted to J. J. ll lcCue, J12, November 29, 1904:, #Tl'fliitii.

Tn devising the present invention T have aimed to provide a simple and economical device which will handle a large number of articles at. one time, in which'all the articles for one dipping may be simultaneously clamped or released, the'clamping and releasing quiclrly efl'ected, and all necessary adjustments be either automatically or easily made.

The invention comprises the novel fea tures of construction and arrangement and combination of parts hereinafter described and particularly set forth in the appended claims.

it device constructed in accordance with my invention is illustrated in the aecompanying drawings, in which- Figure l is a side elevation; lFig. 2 is an end elevation of same; l ig. El is a planv view of a hard rubber bed; Fig. 4- is a plan view of the under side of same; Fig. 5 is a plan view of a pressure bar for doing ten articles at one time 3 inches in diameter or under. Figs, 6 and i are detail views.

Referring to Fig. l, a is a bed plate made preferably from hard rubber of suitable thickness with a rim or flange a, and strengthened by ribs or flanges a. As shown in Fig. 4, the central longitudinal rib is enlarged as shown at a to receive at or near each end a hollow metal stud 7). The ribs are preferably covered by a thin surface plate a affording a smooth surface for the draining oil of the acid. The bases of these studs are threaded into the bed and held by nuts b. A collar b is soldered to the lower end just above the threaded part and, as an added security, a pin b is used.

The lower end of tube 7) is closed by a plug not shown. The lower end of collar 1) is threaded to receive a hand nut c, and below this is a washer 0?. A pad of soft rubbero vents the bar from tilting or corresponding in size to the bed a is laid onto. the upper face of the bed, the ends being slotted and punched to it around the posts. The pressure at these tw points of the washer d and the nut c retains this pad in position. When the articles are in position for dipping, the combined pressure keeps the acid from entering under the pad c excepting a very small quantity. The object is to prevent waste of acid by carrying an excess of acid out of the bath, and in washing off after dipping'in carrying back into the bath an excess of water which would weaken the solution. I

The tubular members 5 b are threaded for about onehalf their length from the top, and adapted to slide up and down on these members is an aluminum fulcrum bar E. This bar is enlarged at each end E to slide on the tubes l) b, and is held in any fixed position determined by the requirements by the nuts f f. The center E of the bar is strengthened by a lug or boss ll" which is threaded to receive the threaded tubular member a". ll solid plug it soldered or otherwise secured into theupper end of the member t, and to this is fastened b the set screw 9' the hand wheel g. To t e lower end of the member t" is soldered and by in d the flangedlug d. 1h col ar Ti, pre er-ably of aluminum, is rotatably carried h the lower flanged part d, and the lower inside edge of the collar is threaded to lit the metal screw plug 0 which is correspondingly threaded on its enlarged u per end. Between the fulcrum bar h an the bed a is another horizontal bar lF also preferably made fromcast aluminum. This bar is a pressure bar and is adapted to slide up and down on the tubular members 5 h. The ends 3) are enlarged and are hushed with a harder metal bushing 10* to which are secured other guiding bushings 3 which pre-.

b inding when being forced up and down. 'This bar p has a till inned tilt til)

strengthening flange or rib m and an enfrom the hand whee g is plie The screwm, after being screwed m3 own, is held by a set screw 0. The cap K is then screwed down holdin the tubular member t and the head of the ug d rotatably between it and the head of 0. The handwheel both lifts and ushes the pressure bar p by actuating it eit er to the right or left.

On the bar p and preferably cast integral therewith is a series of cross bars p see Figs. 2 and 5-and at each end of these is a lug 12* extending upward asuitable distance. These lugs are cored or bored from the bottom side to near the top end to allow a tubular member 1' to reciprocate therein. The member 1' carries another depending tubular member 1" which is smaller in diameter. The lower end of the-member r is closed by a flanged headed plug a and free to play onend 1- passing through a hole in the top of the casting 17*. A nut u is threaded onto its upper endand an additional lock hut a is provided to hold it in position. A coiled s ring t of suflicient strength and tension to orce the rim of the article into the rubber pad hard enough to keep out .the acid is provided, encircling the rod 1*, and this also allows for variation in the length of the articles. When the pressure plate p is intended to do ten pieces at one time, two of these hollow parts are formed along the central or main plate as at 1 1, see Fig. 5. A threaded split clamping collar w is provided on each upright, which may be set at the proper point on the tubular members 6 6. These act as safety stops, and prevent an excess of pressure by the hand wheel on the articles when screwing down the pressure plate 9. Two tumblers for example, are shown in position a :0 ready to be held by screwing own the hand wheel g. While the pad 0 is fixed in position for a days use, in addition thereto I may provide a loose sheet of very thin flexible rubber 1), better known as dental dam, used by'dentists. When I use one thick pad only I provide say ten or more of these thin loose sheets, removin the auxiliary sheet each time, one filling 0 say ten tumblers is finished. This thin auxiliary sheet is hung up to dry, and another substituted, thus always preventing the mouth of the article from coming in contact with anything but a dry and clean surface. I find these sheets will dry out in about twenty minutes in ordinary temperatures, 75 F. These auxiliary sheets range in size the same as the large thick pad '0, but are notched out at the ends to lie freely over the washer (Z. The pressure plate p may be removed at any time and another one substituted having more or less s ring fingers. The design herewith shown eing adapted to do 4-6- -8 or ten pieces at one time 3 inches in diameter or under without change, see Fig. 5. The same bed will only do six pieces 41/2 inches in diameter, using a different pressure plate. Larger pieces may be manipulated or dipped by using a hard rubber bed adapted for this size.

When operating this device, the articles are placed in position with the thin rubber' sheet intervening between them and the thick sheet, the pressure plate being set with the button on the sprin fingers about one quarter inch from the %ottom of the inverted article to be dip ed. The hand wheel 9 is then turned, the ar E acting as a fulcrum. Thisv turns the threaded member 2' and the flanged plug J, forcing down the pressure plate p and with it the spring fingers. When the buttons .9 touch the bottom of the articles, the springs 25 are contracted, and since the springs are of sufiicient'power, the mouths of the articles are forced down onto the rubber sheet with sufficient strength to close them and prevent the ingress of any acid to the interior, the threaded wing clamps being previously set in the right position to insure against over pressure and the breaking of the glass. Reversing the hand wheel releases the articles; the auxiliary sheet *0 is removed, and another one substituted, and the process is repeated.

I claim as m invention 1. A portab e implement for dipping cut glass articles, comprisin a supportlng plate having a cushioned sur ace, a pressure bar adjustably carried above the plate, with means for operatin the same, and a series of independently yleldable clamping members carried by the bar, substantially as described.

2. A portable implement for dipping cut glass articles, comprising a supporting plate, standards rising therefrom, a pressure bar movably guided by said standards, a stationary bar carried by the standards, independently yieldable clamping devices carried by the pressure bar, and means interposed between the stationary bar and ressure bar for moving the latter vertica 1y, substantially as described.

3. A portable implement for dipping cut glass articles, comprising a supporting plate, standards rising therefrom, a pressure bar movably guided by said standards, a stationary bar carried by the standards, independentl y yieldahle clamping devices carried by the pressure bar, means interposed between the stationary bar and pressure bar for moving the latter vertically, and adjustable stops on the standards for limiting the downward movement of the pressure bar, substantially as described.

4. In combination a base or supporting plate, standards rising therefrom, a vertically movable pressure bar guided by said carried, and a yielding surface against which the stationary bar and having swiveled con-' nection with the ressure bar, and a series of independently yieldable clamping. devices earned by. the pressure bar, substantially as described. i

v 5. In combination a base or supporting plate, standards rising therefrom, a pressure device carried by the standardsand includ ing clamping members for the articles to be the articles are to be clamped comprising a main cushion padand a relatively thin auxiliary cushion, substantially as described.

6. In combination a supporting plate having a cushion surface, standards rising therefrom, a vertically movable pressure plate guided by said standards, a normally stationarybar also carried by the standards, means whereby said normally stationary bar may be adjusted to dilferent elevations,

means carried by the normally stationary bar for imparting vertical movementto the pressure bar, and'a plurality of yielding clamping devices carried by the pressure bar, substantially as described.

7. In combination a base or supporting plate, standards rising therefrom, apressure bar guided by said standards and having a plurality of tubular sockets, clamping devices yieldably held in said sockets, and

means for imparting vertical movement to said pressure bar, substantially as described.

8. In combination a base or supporting plate, a pressure bar. supported above said plate with means for movin it toward and from the same, means carrie by the pressure bar for bearing a ainst the bottom of a glass article, and a yie ding pad for, the supporting plate comprising a main cushion pad and a relatively thin easily removable auxiliary cushion pad, substantially as described.

9. In combination a base or supporting plate, a pressure member with means for moving it toward and from the base to clam a cut glass article therebetween, and a yield ing pad between one of said elements and the article for closing the mouth of the article,

said surface comprising a main relatively thick cushion pad and a relatively thin auxiliary cushion pad, substantially as described.

In testimony whereof, I afiix' my signature in presence of two Witnesses.

FRANK GUNN FARNHAM.

Y Witnesses Rom. A. SMITH,

M. J. HANLAN. 

